[Mephisto]

And here is the Default_AI_Construction_Units.txt:

On each turn, this file will be processed (if it exists), and units will be added
to all planetary construction queues which:
1. Are not currently busy.
2. Those planets which have reached maximum facilities.
3. The amount consumed per turn won't reduce the empire's resources to zero.

Note: If there are units listed in the AI_Construction_Vehicles.txt file, they
will be constructed normally.

Colony Type:
Homeworld, Mining Colony, Farming Colony, Refining Colony,
Resupply Base, Research Compound, Intelligence Compound,
Construction Yard, Military Installation

Num Queue Entries:
Num Entries

Entry X Type:
AI Design Type - Mine, Satellite, Weapon Platform, Troop, Fighter,
Recon Satellite, Anti-Planet Drone, Anti-Ship Drone

Entry X Maximum in kT:
Maximum amount in kT this planet can have of this unit type. If the planet
is below this amount, then units of this type will be added to the construction
queue. If this amount or greater is present on the planet, move down to the next
entry. Maximum value for this is 65000.